I went with detachable mags on my rifles because I do not like loading rounds through the top, or unloading by racking the bolt like I had to do on my Rem 700, so much easier to load a mag and slap it in. Also, much quicker to load the rifle with the detachable mag when the need for a quick load arises.
As for the release lever, the one in the pic is a tactical lever, I have since replaced it with a much lower profile lever that eliminates any possibility of inadvertent mag release.
As for carry, in all my years of hunting with this setup, no issues. I rarely carry one handed and just use the scope as a carry handle when I do.
To each his own I guess.

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Last edited by zonzin; 01/19/15.